Lawn-mower.



W.E. GRAHAM.

LAWN MOWER.

APPLICATION FILED JULY 27, 1912.

1,067,244, Patented July 15, 1913.

ATTORNEYS WALTER E. GRAHAM, OF PHILADELPHIA, PENNSYLVANIA.

LAWN-MOWER.

To all whom t may concern.'

Be it known that I, vWALTER E. GRAHAM, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Lawn-Mower, of which the following is aspecification.

My invention consists of a lawn mower having rotary knives and means forsupporting and operating the same involving members of simple, strongand inexpensive construction and adapting the mower to be serviceable asa toy or amusement while having a certain cutting ability as will behereinafter set forth.

rPhe invention is satisfactorily illustrated in the accompanyingdrawing, but the important instrumentalities thereof may be varied, andso it is to be understood that the invention is not limited to thespecific arrangement and organization shown and described.

Figure l represents a perspective view of a lawn mower embodying myinvention. Fig. 2 represents a side elevation of a detached portionthereof. Fig. 3 represents a side elevation of one of the wheels of themower including an internally toothed spur gear thereon. Fig. trepresents a horizontal section of a portion of the mower. Fig. 5represents a perspective view of detached members embodying theinvention.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings A designates the side plates of the frame ofthe lawn mower, the same having attached to it the forks B of thehandlemember C and being connected by the transversely extending rod D. Edesignates the stationary bed knife which is secured to said plates A,and F designates the roller on which the mower may be run, the samebeing mounted on said plates adjacent to said bed knife E.

Gr designates the wheels of the mower, the same being mounted on theplates A by the screws I-I, which pass through the hubs of said wheelsand through said plates and are held in place by the nuts J which areadapted to tighten against the inner sides of said plates.

The wheels@` are formed with internallytoothed or spur gears K withwhich mesh the pinions L, the latter extending out-- wardly from theshafts M on whose inner ends are the hubs of the spiders N to whoseSpecification of Letters Patent.

Application led July 27, 1912.

Patented July 15, 1913.

Serial No. l?11,785.

arms are riveted or otherwise secured the rotary blades P, it being seenthat the pinions L are exterior of the plates A, and the spiders Ninterior thereof, while the shafts M freely occupy openings Q, eccentricin said plates A, said shafts thus and consequently said pinions andspiders having their bearings on said plates at said openings. The hubsof the spiders form shoulders on the shafts M the same resting freelyagainst the sides of the plates A and preventing lateral play of saidshafts and consequently of the blades P.

The operation is as follows :-The mower is moved by the handle and itruns on the wheels Gr, the latter rotating and causing their spur gearsK which follow said wheels G, to rotate the pinions L, the motion beingimparted to the shafts l/I and the spiders N, and consequently to theblades P, the latter thus rotating adjacent to the bed knife E. It willbe seen that each pinion L, shaft M, spider N are continuous of eachother and of integral construction, and said shaft has its bearing onthe plate A, so as to rotate thereon while supporting' the spider andpinion and communicating its motion to the latter and consequently tothe blades P, said construction being simple, strong and inexpensive inits nature and readily cast or otherwise formed as one, it being evidentthat the pinions L and the spiders N are not weakened by boring, butretain their intact condition and so preserve their strength this beingassisted by the integral nature and jointless connection of each pair ofspiders, shafts and pinions with each other.

I-Iaving thus described my invention what I claim as new and desire tosecure by Letters Patent, is

l. In a lawn mower of the character stated, a frame, a running wheel forthe mower mounted on a member of said frame, an internally-toothed gearon said wheel, a pinion adapted to mesh with said gear, a shaft carryingsaid pinion and occupyingl an opening in a member of said frame and ablade-carrying arm connected with said shaft, and having a hub whichforms a shoulder adapted to bear freely against the side of said framemember, said pinion, shaft, hub and arm being integral.

2. A lawn mower of the character stated composed of a frame, a rotaryblade, a bed knife, an arm carrying said blade, a

'IIP STAILIIMS PATENT OFFICE. i 4

V shaft connected with said arm, a pinion on the portion of said shaftbetween said pini011 and arm having its bearings directly on said framemember.

WALTER E. GRAHAM.

said shaft, said shaft having its bearings on a member of said fra-me, arunning Wheel for the mower mounted on said frame member and aninternally-toothed gear, said Witnesses: pinion and gear Vbeing adaptedto intermesh, N. F. CRESSMAN, said pinion, shaft and arm being integral,W. K. JONES.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

` Washington, I). C.

